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.iiiiiifirng i it known'thnr L'IJRUBRT Wensen, of Maw nesota, have inventari :rnyfzinii improved Excavator; :1nd l :lo hereby declare 'that the' k1i.illowiii5 g ish. full,

comizzinying dru\\'ingf-, making :i pari; of this specifi- Fignre lvjis from; elevation;

Figure 2,@ iiieieierat-ion; and

Figure 3 is a plan view of :i machine embracing my improvements. i i

This invention consists in making the central nprigixt frame, on which is sustained the endless chain which carries the digging-'apparatue, adjustable vertically, so that it may bear seid apparatus ne for down into the earth as it is desired to eut; the ditch,

plane; also, in mounting said frame upon a. pivot, iso tha-t ib may be urned down, when not in use, uprm the truck which euries the machine, for convenience in transportation; aise, in providing, in addition io 'the said ventral frame, side frames, armed with cutele and gutters, for forming the sides of the ditch, and conducting the removed earth to Lhe centra-i sie rating-bueitets, areciprocating*Jerieni motion being impaued to the sind side frames, o enable them the better tu perform their {inist-ions, and they being en ranged so es to forni the sides of the ditch at any di aired inelinatinn; aise, in making sho rear axle oi' the truck-freine extensible, so that the wheels may nl ways rnn oniside the ditch, however iviile iwmig: he ntthe topi,

.iu the drawings- A is the truck which carries the ninehine, which truck has three sets ci' wheeis.

Beursen the iiiiiidie inni reni central' frame B, which is made ni two psu-filial plates, b b, placed fer enough :inni-t to aemmmodete the elevating-chain, showin, mail Scrapers between them, and @zich having a. eenrrii longitudine? slur, o', g. i, reznhinglnem'ly its whole iengt'la.

These sims areintended to enable. Llxe iianie E "m siide np anni fih'wn unen :i smtionnr): guide-heme, e, hg, 2.

The frame .B rests upnn :i pair oi' small wheels, ii" 12", attached in the inwervnil nf the iitnne hysni ,..ble :irme1 and these wheels run along iin: hotl'nni oi' ihn newlynuniie din-h. 'lhef irnzne i5 slides ii'reiy upon its guide-haine r, and 'oiloirs the Vditch down withon diicuity, to :my required depth, and from' this independence of the fmine in its rerieai morernenin wiih respect to the truck, it is evident that the fermer parmkes of none' of the irregular moi-meufs of the hib riptiou nf the @instruction and opemiinn hi theennigirefereneebeing had to the :ic-

in'les is piaceri thev "Tlh'coui zefened toin these Lettera Peteur and making part of the earns.

iur, canned by the unevennees ofthe snricv, hut cuts e, perfectly plane bottom to the dieh, so that the water may uli pass ofi' without obstruction.

When @he machine is en frente', iL is preferabiethglt the hanne B should renenrly iwrizonzaiiy upon die truck. i y

To his end, lie'guidei`i-iaxe c i@ pirated in the rhetailio hars c' c',' that connect the rezar :imi @entrai :mies ofthe truck,k and is heid in en npriwit position hy means of may-rods, es a, which wed at their opposite ends C0 poss prnjeeiaing upward from the rear end of the forward part oiiihurncn By escrowing he stayJmis-ii'oni the. pose?, die iiiimefi e rmd B may he turned down upon their girar, sind reet upon the {omai-: partof the ti."

The enrlieee chain Wit ies ihe shm'eie d and seri-@ers if?, ie make in ich@ nenni nimmer, by means of parallel ms:L a, eonnee'teii zii.' iii emile by links, ef.

anclhave speenlezieia, i'o'f the more easy Feeding @if hard ioii. The "d ziii'emateiy with he picks, bei! iinife.

A. simi? 1*, conne@ hvgnezuzs q The shim i inio :a e:irrierzipif. n is', plea aart of the imme9 and eher if', connected as ite fom' ing-shadi- J, :imi iin i the Carr ters, n", eieneuefi eiong the omer eliges @inherit-metal inclined gutters, n', with sharp cuttingedges', fastened aiou the front sides of said sheetmetal plates, which cutters form the sides of the ditch as the plates are moved up and down.

'j This r'notion is' imparted to the plates by reason of 'their being attached to carriages o, one at each side "oif'the central frame B, which carriages o slide ou the outsides of guide-frames o', the lower ends of which hr'pivoted to the lower ends of the sides oi the cenfrarne B, while their upper ends are attached to lith'e joter'cxtremitis of arms o", .the inner extremities which are Pvted to the upper ends' oi' the sides of .thecentral frame, in such a manner that the said plates, n, and

y guide-frames o' may be fixed at a greater or less angle "ofiinclination tofthe.. central frame, accoxding to the iope Ait isjdesired to give the sides of the ditch, as hownfin iig. V1.*1 .i The hecessa l ,f motiouis imparted to the carriages by cranks Ron thefends o,shoxt shafts in the werpart of the 'central ame,"\vhich cranks P are 1 peited by connection with the gearing of the lower l ndof thecentral. 'siiisiiinrf f ,The'cfanks P are joined with `the carriages o by con- A'vec tingfifods' Q, gd. Thusfthe side cutters play up aiddownas the machinel progresses, and all the -dirt they remove passes, by means otgthe gutters n', to the scraper-s d; and is by them removed. It is, of course, fsfnesessrmo keep-nie .wheelsfor the rear axle str .UghQapart/ t enable themv to frimalways outside" ,e difell; Whether itbecutwide'oi' narrow. I theres.

'i :fieke tnerearagie inner'epds cf tHe/parts,

past each other through a pair of sockets, and fast- 'ening the parts oi' the axle in the sockets by means of set-screws, so that the axle may be extended at pleasure, and transverse section of the axle, detached from the machine.

Having thus described my invention,

What I claim as new, and desire to secure byLetters Patent, is-

1. The central frame B, made vertically adiustable, so as to excavate a ditch with a piane bottoni, and to any depth, and also so arranged, with reference'to the truck A, as to be capable of being turned down hrzontlly for convenience in transportation, substantially as described.

'2. Providing an excavating-machine with sidecuttingapparatus, so arranged and' made adjustable asto forni a ditch with sides of any required slope, as and for the purpose set forth.

3. In combination with an excavating-machine having side-cuttin g apparatus, capable of receiving greater or less inclination, an extensible rear axle, arranged as and for the p urpose explained.

4. Providing an excavating-machine with side-outtingapparatus, having a reciprocating motion, substantially as set forth. To the above specification of my invention,;I have set my hand, this 23d day of J une, 1869.

I B. ROBERT WERNER. -Witnesses: 4" Crus. A. Pn'rfrrr, ySonor O. Kanon.

as represented in iig. 4, which is a top view 

